Dyfyniad APA

Worldwatch Institute & Brown, L. (2000). State of the world 2000: A Worldwatch Institute report on progress toward a sustainable society. Norton.

Dyfyniad Arddull Chicago

Worldwatch Institute and LesterR Brown. State of the World 2000: A Worldwatch Institute Report on Progress Toward a Sustainable Society. New York, N.Y.: Norton, 2000.

Dyfyniad MLA

Worldwatch Institute and LesterR Brown. State of the World 2000: A Worldwatch Institute Report on Progress Toward a Sustainable Society. Norton, 2000.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.